福建中立恒自动化设备有限公司
目前,世界上有200多个厂家生产可编程序控制器产品,厂家有德国的西门子,美国的Rockwell(AB)、通用(GE),日本的三菱、欧姆龙,法国的施耐德等。
可编程序控制器总的发展趋势是向高集成度、小体积、大容量、高速度、易使用、高性能方向发展。具体表现在以下几个方面:
(1)向小型化、专用化、低成本方向发展
20世纪80年代初,小型PLC在价格上还高于小系统用的继电器控制装置。随着微电子技术的发展,新型器件大幅度的提高功能和降低价格,使PLC结构更为紧凑,功能不断增加,将原来大、中型PLC才有的功能移植到小型PLC上,如模拟量处理、数据通讯和复杂的功能指令等,但价格不断下降,真正成为继电器控制系统的替代产品。
(2)向大容量,高速度方向发展
大型PLC采用多微处理器系统,有的采用32位微处理器,可同时进行多任务操作,处理速度提高,特别是增强了过程控制和数据处理的功能。另外,存储容量大大增加。
(3)与计算机联系密切
从功能上看,PLC不仅能完成逻辑运算,且计算机的复杂运算功能在PLC中也进一步得到利用,从结构上看,计算机的硬件和技术越来越多地应用到PLC;从语言上看,PLC己不再是单纯用梯形图语言,而且可用多种语言编程,如类似计算机汇编语言的语句表,甚至可直接由计算机语言编程;在通讯方面,PLC与计算机可直接相连并进行信息传递。
(4)发展多样化
可编程序控制器发展的多样化体现在3个方面:产品类型、编程语言和应用领域。
(5)模块化
PLC的扩展模块发展迅速。功能明确化、专用化的复杂功能由专门模块来完成。主机仅仅通过通讯设备向模块发布命令和测试状态,这使得PLC的系统功能进一步增强,控制系统设计进一步简化。
(6)网络与通讯能力增强
计算机与PLC之间以及各个PLC之间的联网和通讯的能力不断增强,使用工业网络可以有效地节省资源、降低成本、提高系统可靠性和灵活性,致使网络的应用有普遍化的趋势。
(7)多样化与标准化
生产PLC产品的各厂家都在大力度地开发自己的新产品,以求占据市场的更大份额。因此产品向多样化方向发展,出现了欧、美、日多种流派。与此同时,为了推动技术标准化的进程。一些国际性组织,如国际电工委员会(IEC)不断为PLC的发展制定一些新的标准,如对各种类型的产品作一定的归纳或定义,或对PLC未来的发展制定一种方向或框架。
(8)工业软件发展迅速
与可编程序控制器硬件技术的发展相适应,工业软件的发展非常迅速,它使系统应用更加简单易行,大大方便了PLC系统的开发人员和操作使用人员。
可编程序控制器的输出信号类型可以是开关量、模拟量和数字量。输出单元从广义上分包含两部分:一是与被控设备相连接的接口电路,另一部分是输出的映像寄存器。
PLC运行时CPU从输入映像寄存器读取输入信息并进行处理,将处理结果放到输出映像寄存器。输出映像寄存器由输出点相对应的触发器组成,输出接口电路将其由弱电控制信号转换成现场需要的强电信号输出,以驱动电磁阀、接触器、指示灯等被控设备的执行元件。
以下链接皆有货
SOPREL SERVODRIVES 7.31.713 Transdriver PWME140X25/50 | PWME140X2550
SOR 6L-AA3-F2A 4-100PSI 1500 Range 2500 Proof Static o Ring Pressure Switch
Sor Explosion Proof Pressure Switch 56L-K316-M4-C2A-TB 30-0-160 IN HG 1500 PSI
Sor Pressure Explosion Proof Switch 9AH-AF45-M1-C1A 200-1750 PSI 2500 Overrange
SORBIOS SEMOZON 090.2 Ozone Generatir, Oxygen, 90 g/h, 175580
SORENSEN POWER SUPPLY DCR300-9B2 0-9A 208V INPUT 0-300V OUTPUT 25.9/PHRRA
Sorensen PTM-15-.8D 14-16V .8A Power Supply
SORGEL TRANSFORMER X23234 25KVA 480-208/104V SINGLE PHASE
Sourcetronic STB6024 Brake Unit ZTDCB0738348
South lane Micro System SMH-64MB-VE2 64MB Vectra A95
SOUTHERN TIER TECHNOLOGIES SURGE PROTECTIVE DEVICE T45277Y100NDAM2D TIER 400SPD
SP SHEFFER HYDROLIC CHUCK 8R2C080 500PSI 3000RPM
SPANG 651-575-60-1A POWER CONTROL UNIT
Spartan Worm Gear Drive 0270-00177 10/1 Ratio 1750RPM AL45410-1B56Car
SPEARS 801-060 TEE FITTING, 6 INCH, NSF PW PVCI SCHEDULE 80 PVC, D2467 Lot Of 2
SPEARS 829-060 PIPE COUPLING SCH 80 6" PVCI Lot Of 3
Spears Pvc Fanged Gate Valve 150 Class 2023-030
SPECSEAL 2" SPLIT SLEEVE FIRESTOP SLEEVE 12”
Specseal FSR100 Ready Sleeve Firestop Sleeve and Split Sleeve, 1"D X 12"L
Spectra-Physics 196-2 Laser Head, HeNe, VLSI 68-00054, 148504
Spectronics S7-120-91 MXLC8 Rev H Fire Alarm Panelview Display
SPECTRUM LIGHTING WJ1INC/FJ1/CG1 LIGHTING FIXTURE WALL MOUNTED FOR WET LOCATIONS
SPEED COMMANDER | SC3-4000 | frequency converter
SPEED CONTROL MOTOR REMOVED
Speed King Parker Pilot Operated Valve K065 9 033
SPEEDAIRE 4ZK99A 150PSI 3/4” NPT
SPEEDAIRE 6X397 4 Inch Bore 8 Inch Stroke Air Cylinder
SPEEDAIRE DESICCANT AIR DRYER 1/2 INLET, 250 PSIG MAX. PRESSURE, 200°F MAX. TEMP
SpeedFam 2805-103891 Assembly, Platen Spindle Cooled Polisher 401955
Speedfam 372M-03590-1R RFK HI TORQ POLISH ARM DR SP REV B, 132436
Speedfam 372M-03590-1R RFK Hi Torq Polish Arm DR SP, 137793
Speedfam 372M-03590-1R RFK Hi Torq Polish Arm DR SP, 153769
Speedfam 372M-03590-1R RFK Hi Torq Polish Arm DR SP, 153770
Speedfam 472-17510 ARM POSITION SENSOR ASSY, 114151
Speedfam IPEC 2850-739458R Robot, Genmark 9960561R, GB4-17", GB4, 142501
Speedfam IPEC 2850-739459 Gencobot Robot Controller, Genmark S08R.11, 132702
SPELLMAN RHM10P10X545 VARIAN 4030030 QUAD LENS POWER SUPPLY, 155131
SPERRY UNIVAC 2873490-01A PCB BOARD DSR-VI, 109220
Sperry Vickers 284997 Steam Servo Piston
Sperry Vickers 306872 SPL Servo Spool
SPERRY VICKERS CONSTANT DISPLACEMENT PISTON MOTOR MF2003A30-1520S626R
Sperry Vickers DG4V-3-2A-W-B-12 DIRECTIONAL Pilot Valve With 414621 Solenoid WAR
Sperry Vickers DG5S4 042A WB 40 Directional Valve
Sperry Vickers DG5S4-048C-E-WB-40 Directional Control Valve
Sperry Vickers F3-FCG-02-1500-50 Flow Control Valve
SPERRY VICKERS FLOW CONTROL VALVE FCG-02-1500-50
Sperry Vickers KDG1-5A-AR-614888-10 24V Motion Speed Controller Boarda
Sperry Vickers Solenoid Valve Lucifer 487066 Old Stock
SPG Co. Ltd. XWD40A Motor Driver BLDC 1 Phase 120v
SPI DRILL CHUCK JT33 CAP 1/64" - 1/2" 0.5-13MM
SPINDLE 15-3/4" LENGTH W/ PARLEC TOOL B30-01EM238
Spirax Sarco | M800 | Steam Flow Computer
Spirax Sarco 0459381 BVR2 1" Valve and Seat Assembly
Spirax Sarco 0459590 BRV2S 1” Direct Operated Pressure Regulator 3.5-8.6 BARG
Spirax Sarco 1” Steam Trap AVC32 AYVY10 Class 300
Spirax Sarco Bellows Assembly 0457380 all Sizes BRV2S, SRV2S, BRV7 #
Spirax Sarco BRV2 Green Control Spring And Cap NOS
SPIRAX SARCO DP27S //DN40 / PN16/25 / 0.2-17 bar g // Kv max 17 / pressure reducer
SPIRAX-SARCO TD42L | 1/2" Stainless Thermodynamic Steam Trap | 600 psi
SPLIT/TRAN SIGNAL TRANSFORMER ST-7-36
Spohn + Burkhardt metal joystick VNS0.2200344 + absolute generator OER8B-1
Spohn + Burkhardt metal joystick VNS0.2200345 + absolute encoder OER8B-1
Spohn+burkhardt 11 FNVR HARD SS3747
Spohn+burkhardt 11 FUVR HU SS3747
Spool of 9842 060 APPROX. 600FT 305 MTR Shielded Low Voltage Computer Cable
Spool of APPROX. 900FT Panduit ISFCH5C04ATL-XG IP 4PR 24AWG Cat5E TPE Industrial
Spool of Belden 22/2PR TC PPRO/PVC SHielded 8723-060 1000FT 305MTR Cable
Spörk Asynchronous Motor | IN63B4 + SFK 030P020-N 0.18/4-63B14-FU-FRL
SPP AVW DIGITAL KEYPAD DISPLAY MONITOR MODULE
Spraying Systems Nozzle JAUA-SSVI
SPRECHER & SCHUH CA1-60 110 Amp CONTACTOR Reversing Size 3
SPRECHER & SCHUH CA1-60-120-N0 CONTACTOR USNT & CT1-150 Overload
Sprecher & Schuh CEP7-EEDB Contactor 600 V 3 Phase 3.2-16 Amp Adjust
SPRECHER & SCHUH SOFT STARTER PCE-051-600V 51A 200-600V 3PH SERIES BT
Sprecher + Schuh Contactor CA7-12E-10-24E
Sprecher + Schuh Contactor CA7-60-00-120 100 Amp Contactor 120V Coil
Sprecher + Schuh Contactor CA7-60-00-120 Contactor W/ Overload CEP7-EEGE 18-90A
SPRECHER + SCHUH CONTACTOR CA7-9-10 W/ OVERLOAD RELAY CEP7-EECB SER C 1-5A
Sprecher + Schuh CZE3-11-0.3-30S Timer CZE3110330S
SPRECHER + SCHUH L9-15/3D MINIATURE CIRCUIT BREAKER 3-POLE
Sprecher + Schuh Mini Circuit Breaker L9-1/2/D
SPRECHER SCHUH CK7 Ecomboplus starter KTA7-45H-32A CA7-30-00 KT7-45-TE
Sprecher Schuh Contactor 24V CA3-23-L01
Sprecher Schuh Contactor And Overload Relay CA6-115 CEP7-EEHF 30-150 Amp
Sprecher Schuh Term Fuse Block V7-WFB10VA Lot Of 10
SPRECHER+SCHUH CONTACTOR CA7-9-10 CS7-PV W/ OVERLOAD RELAY CEP7-EECB SER C 1-5A
SPROCKET GEAR, PARTS
SPS SPECIAL PLASTIC SYSTEMS FILTERCHEM PR-50 VALVE
SPX FLOW 872249PSP BEARING AND SEAL KIT
SPX FLOW 872287PSP High Speed Coupling Kit
Sq D QOM2-2225NRB Circuit Breaker Enclosure 225A Max 120/240V 1PH 3W QOM2150VH
SQ2131N5C6Q - SMC - SQ2131N-5-C6-Q / Valve Simple Plug-In
Sqaure D 9070T150D4 0.15 KVA Industrial Control Transformer 277 Pri 120 Sec V
SQUARE 2" BOLT-ON TOOL BLOCK HOLDER
SQUARE D - Circuit Breaker - FC34015 - 15A -3 Pole - Type FC - 480V
Square D 100A 208Y/120VAC 3 Phase 4 Wire Series E2 30 Circuit Panel Board 1
Square D 100A 208Y/120VAC 3 Phase 4 Wire Series E2 42 Circuit Panel Board 1
Square D 100A 75HP 600 Volt 3 Phase Safety Disconnect Switch
Square D 100Amp Thermal-Magnetic Circuit Breaker Part# FAL22100WB
SQUARE D 100SV1A Transformer,100VA,240VAC, 480VAC SEALED BOX
SQUARE D 112.5KVA TRANSFORMER 112T6H 480HV 240LV 3PH CLASS AA
SQUARE D 112.5KVA TRANSFORMER 112T76H 480PV 480Y/277LV 3PH
Square D 1210279917-003 1200A Series E1 480Y/277V 3 Phase 4 Wire I-Line Panel
Square D 12-13898190-002 400A 208Y/120V 3 Phase 4 Wire Series E1 Panelboard